| Value | Category | Cases | |
|---|---|---|---|
| 1 | Concrete | 80 |
69.6%
|
| 2 | Logs | 0 |
0%
|
| 3 | None | 4 |
3.5%
|
| 4 | Other | 2 |
1.7%
|
| 5 | Plastic | 2 |
1.7%
|
| 6 | Wood | 27 |
23.5%
|
| Missing value | 239 |